ZHCSH93 December   2017 TCAN4420

PRODUCTION DATA.  

  1. 特性
  2. 应用
  3. 说明
    1.     Device Images
      1.      功能框图
  4. 修订历史记录
  5. Pin Configuration and Functions
    1.     Pin Functions
  6. Specifications
    1. 6.1 Absolute Maximum Ratings
    2. 6.2 ESD Ratings
    3. 6.3 ESD Ratings Specifications
    4. 6.4 Recommended Operating Conditions
    5. 6.5 Thermal Information
    6. 6.6 Power Supply Characteristics
    7. 6.7 AC and DC Electrical Characteristics
    8. 6.8 Timing Requirements
    9. 6.9 Typical Characteristics
  7. Parameter Measurement Information
  8. Detailed Description
    1. 8.1 Overview
    2. 8.2 Functional Block Diagrams
    3. 8.3 Feature Description
      1. 8.3.1 TXD Dominant Time Out (DTO)
      2. 8.3.2 CAN Bus Short Circuit Current Limiting
      3. 8.3.3 Thermal Shutdown
      4. 8.3.4 Under Voltage Lockout (UVLO) and Unpowered Device
        1. 8.3.4.1 VIO Supply PIN
    4. 8.4 Device Functional Modes
      1. 8.4.1 Polarity Configuration
      2. 8.4.2 Normal Polarity Mode
      3. 8.4.3 Reverse Polarity Mode
      4. 8.4.4 Driver and Receiver Function
      5. 8.4.5 Floating Terminals
  9. Application and Implementation
    1. 9.1 Application Information
    2. 9.2 Typical Application
      1. 9.2.1 Design Requirements
        1. 9.2.1.1 Bus Loading, Length and Number of Nodes
      2. 9.2.2 Detailed Design Procedure
        1. 9.2.2.1 CAN Termination
      3. 9.2.3 Application Curves
  10. 10Power Supply Recommendations
  11. 11Layout
    1. 11.1 Layout Guidelines
    2. 11.2 Layout Example
  12. 12器件和文档支持
    1. 12.1 器件支持
      1. 12.1.1 器件命名规则
    2. 12.2 接收文档更新通知
    3. 12.3 社区资源
    4. 12.4 商标
    5. 12.5 静电放电警告
    6. 12.6 Glossary
  13. 13机械、封装和可订购信息

封装选项

请参考 PDF 数据表获取器件具体的封装图。

机械数据 (封装 | 引脚)
  • D|8
散热焊盘机械数据 (封装 | 引脚)
订购信息

CAN Termination

The ISO 11898 standard specifies the interconnect to be a twisted-pair cable (shielded or unshielded) with 120-Ω characteristic impedance (ZO). Resistors equal to the characteristic impedance of the line must be used to terminate both ends of the cable to prevent signal reflections. Unterminated drop lines, stubs, connecting nodes to the bus must be kept as short as possible to minimize signal reflections. The termination may be on the cable or in a node, but if nodes may be removed from the bus, the termination must be carefully placed so that it is not removed from the bus

Termination may be a single 120-Ω resistor at the end of the bus either on the cable or in a terminating node. If filtering and stabilization of the common mode voltage of the bus is desired, then split termination may be used, see Figure 16. Split termination improves the electromagnetic emissions behavior of the network by eliminating fluctuations in the bus common-mode voltages.

TCAN4420 sllsez4_CAN_Bus_Termination_Concept.gifFigure 16. CAN Bus Termination Concepts

The TCAN4420 transceiver supports both 5-V only applications and applications where level shifting is needed for a 3.3-V microcontroller. See Figure 17 and Figure 18 for application examples.

TCAN4420 typ_app_5V_sllsf19.gifFigure 17. Typical CAN Bus Application Using TCAN4420 with 5 V µC
TCAN4420 Typ_app_3V_sllsf19.gifFigure 18. Typical CAN Application Using TCAN4420 with 3.3 V µC